Okay here is a true event from when I worked for the California Department of Fish and Game at Hot Creek Fish Hatchery in 1987. That is located at 8,000 feet in elevation on the Eastern Sierras off of Hwy 395. South of Yosemite Nat'l Park and North of Mt. Whitney (highest point in the lower 48 states).
Well it was time to do some fish planting of the several species of trout that we raised there - rainbow, brown, brook, cutthroat, lake, and golden trout. One day the Hatchery Manager comes in and says it is time to do aerial fish planting. Who wants to go?? Well out of 15 employees 6 of us volunteered. So we drew lots, and I got to go on the third flight. There was a small single airstrip rural airport near the fish hatchery which we flew out of.
This was in a twin engine beechcraft heavily modifed aircraft. In the lower fusilage, they put in bomb bay doors which opened and closed remotely. There were 30 seperate 5 gallon aerated tanks full of 2-4 inch long trout. The co-pilot could control which tanks were released by a remote control board at his seat. I was there to monitor the fish and to see how the aerial fish planting hit on the alpine lake. It was very strange to be flying at 12,000 feet in altitude and see mountains outside the window of the plane!
So our 1st aerial planting site was just outside the south edge of Yosemite National Park. We confirm that it was the correct lake, circle around twice, and get orientated for the "Bombing Run". The co-pilot says, "hey look there is a guy in an inflatable raft way out here, lets have some fun!" Pilot goes, "OK just don't loose the fish.." and I keep my mouth shut not knowing what is coming next.
We circle around and line up on the middle of the alpine lake where the guy is fishing. We dive down and at apogee where they pull the nose of the plane up to climb, they release the 6 seperate five gallon compartments of fish and water. I see it hit very close to the raft, while the pilots are banking and climbing the plane, and laughing hysterically. At this point I am laughing from the event or out of not being sure what these two fly boys are gonna do next flying between mountain peaks.
Meanwhile as I tell this on ham radio: The unlucky recipent of hundreds of 2-4 inch long fry is probally wondering what those crazy yahoos in the plane are gonna drop next as we circle above (they plant the fish that small so they will stay in the water column and break the surface tension of the lake for higher survial rates). But now 20 years later, when that rafter tells the story, I bet he is saying we dropped 2 foot long trout out of the sky and into his raft that day..
Now I know why the long time hatchery employees, did not want to go do aerial fish planting that day at work... I did not get airsick, but was concerned on their abilities to fly into the small alpine lakes we planted the fish in. Some highly dramatic flying that day. I think that they were ex-fighter pilots maybe???? And I had been in the Infantry in the Marine Corps, with my feet on the ground not used to such manuvers.
Many years ago, they used to plant fish into alpine lake by hauling them in by packmule. That journey would take days at times.